Misthreading device.



J. NORTHROP.

MISTHREADING DEVICE.

APPLIGATION FILED JULY 12, 1910.

Patented 111211228, 1911.

Y 2 SHEETS-'SHEET 1. E y 2 /6 A /g J. NORTHRUP.

MISTHREADING DEVICE.

APPLIQATION FILED JULY12,1910.

Patented Mar.28,191l1.

" z SHEETS-SHEET 2.

- 7165566: @M )u M 7072@ TOM/7270])- Uhllllhl@ 'llliilll@ lEl-hlhililllJONAS NORTHROP, OF EOPEDALE, MASSACHUSETTS, ASSIGNOR T CLARE I-I.DRAPER,

OF HOPEDALE, 'MASSACHUSETTS MISTHREADING DEVICE To all @hom 'it mayconcern:

Be 1t known that I, Jonas Nonrnnor, a citizen of the United States,residing al Hopedale, in the county of llVorcester and specification,like letters on State/of 'Massachusetts, have invented an 'Improvementin Misthreading Devices, of

which the following description, inconnection With the'accompanyingdrawings, is a the draivings representing like parts.

The invention to be hereinafter described relates to looms, and moreparticularly to looms of the filling replenishing type ,Wherein at.desired times a fresh supply of filling is automatically' furnished.

In looms of the above general type Vfilling carriers are transferredfrom an appropriate supply into the shuttle when the latter is to bereplenished and is'in proper position for such operation." It happens attimes, following the action of replenishment, that the tilling becomesbroken at the moment of .transfer or prior to the arrival of the shuttlein the boi; on the side of the loomremote fromi the replenislnngmechanism; or that a. like condition a 1ises on the return of theshuttle to the repllznishiug side, especiallyY Where the shuttle failsto be properly threaded following replenishment. Therthe filling breaksunder the first of the above conditions, which is technically known inthe art as a hopper misthread and Which for concis"- ness of descriptionWill hereinafter be thus designated, a new supply ot filling hasheretofore been furnished the shuttle on its re turn to the replenishingside. Obviously should a number of hopper misthreads occur insuccession, the transfer of iilling carriers to the shuttle lmightcontinue until linally the supplying means would become .exhausted Wherethe filling 'breaks under theshuttle directly backward to the clothselvagge vas the sliiitt-lfe travels through the shed, so that thefilling cannot unwy'ind from theearrier-and breakage necessarily occurs.This/is technically known in the art as a real misthread and for brevitysuchgcondition'vvill hereinafter be designated by such term.

Specification of Letters Patent. atgnjled ligar. 28, 1911.* Applicationled July l2, 1916. Serial No. 571,590.

To prevent exhaustion of the .filling carrier supplying means on theoccurrence of a succession Aot hopper mistlireatls.at tempts haveheretofore been'made to stop the loom on the occurrence of tivo of suchfaults in succession, but in all ot such casesl should intact filling be laid once on a detecting pick following a misthread the parts werereturned to initial position, so that to eiect stoppage of the loomthereafter' two 'successiveabsences of filling were required, lwiththeresu'lt that stoppage for a real misthreadl ivas precluded, and theloom would continue to operate until the hopper became exhausted and alength of cloth had I been Woven with thin places therein. '1

lilith these facts in mind the present invention aims among other thingsto provide means whereby if filling is absent on two alternate detectingbeats, the loom Will stop regardless of Whether filling is present or`not on the intermediate beat; ,These` and other objects ot theinvention Wnieh will he `more 'fully developed herein, -will best heunderstood from the following `description and aceompanaying drawings ofone torni of means for carrying the inventioninto practical effect.

In the drawings :QFigure l is a plan view ot so much of one side of aloom embodying the present invention as is desirable to show therelation ot the invention to its coacting parts; Fig. 2 is a section onthe line Qd,

Fig. l; and Figs. 3, 4, 5, G, 7, 8 and 9 are detail views showingvarious positions assumed by the rider and its immediately associatedparts under rvarying conditions of the filling to be herein described.

. The loom frame including the breast .beam l, lay 2, shuttle box 3, theshuttle fl,

the transverse shaft 5, and its supporting brackets 6 Which affordbearing therefor may all be of any usual or Well known character andconstruction.' The filling" ,replen-` ishing mechanism, which iscontrplled as to its replenishing action from the transverse shaft44 5,is not herein shown, as its various appropriate forms and its locationat ,that

construction new ivell known, whereby upon'l 'side of the loomremote'from the detecting turning movement ofthe transverse shaft 5,devices are put in position to cause said mechanism to replenish thelling-inlthe shuttle when the latter returns to the replen-v ishing sidefollowing detection of .lling fault. Une appropriate form of suchmech-'- anism is shown and described in my application, Ser, No.516,240, led September 4, 1909, but it is understood that I do notrestrict my invention to such form of replenishing means, as it maybe'emplo'yed with any desired character of devices which upon indicationfor replenishment will effect the necessary transfer.

Mounted on the .transverseshaftis an arm 7 jointed at 8- to an actuator9 having a part 10 adapted to beengaged by the weft hammer 11, which isitseltmoved in usual manner, well understood by those skilled in theart', to cause theactuator 9 to travel to the right, Figs. 1 and 2, ortoward the front of the loom, when said actuator,-`during the detectingbeat-up `of the lay, has its end 12 sustained by the arm 13 of the Wettfork 14, which ails'to be tilted upon an absence .of filling. Securedto. the breast beam `1 is a bracket 15 having the fixed supporting arms16 projecting vrearwardly which ksupport, the pivot 15x ofthe weft fork14. A `spring17V having one end connected to the transverse' ,shaft 5and the other end fixed to the loom trame, normally acts to hold thesaid shaft lvviththe parts'in position asindicated by 1 and 2, but, uponmovementlof the actuator 9 to the right, Figs. 1 and 2, or toward' thefront of thev loom, by the weft hammer, permits said shaft to turnunderthe action 'of the arm 7 The parts thus far described with respectto the detecting mechanism may be substantially as in my priorapplication, Ser. No. 516,849, filed September 9, 1909, the conistruction being such that should filling not 'be laid by the shuttle asit passes .to that side of the loom remote from the replenishingmechanism, the following beat up movement of the lay, which foridentification may be herein known as the detecting beat, will fail totilt the lling fork, so that the actuator 9 will be sustained by thesaid fork and, as the weft hammer moves to the front orto the right,Figs. 1 and 2, it will engage and move the actuator, with the resultthatthe transverse shaft 5 will be artially turned to position the parts forfilling replenishment on the next beat up movement of the lay when theshuttle is on the filling replenishbeam 1 is a :ing side of the loom,all as will be readily understood by those familiar with this class ofmachines. f

. Projecting from the end of the breastv acket 18 appropriately securedto the breast by means, such as the bolts 19,,

said bracket being provided with the. usuali slot 20 and'holding notch21 for a shipper' 22.4? riveted, matchmaker ia-amarga l 'knock-oieleveradapted to disengagethe shipper from its holding notch 21and stop theloom. Extending from the` pivotal mounting 23 of the lever 24 isa vstoparm 25, which, upon movement clockwise, viewin rFig. 1, is adapted toactuate the knock-o lever 24 and cause loom stoppage. The end preventaccidenta dislodgment ofthe rider while permitting free longitudinal andtilting action thereof.

The rider has a side cam 32 which on longitudinal movement of the riderto the left or rearwardly is adapted to engage a complemental portion 33on a. lifter 34, Fig.1,fv90

a lug 35 serving to support the ridevr'lifter in'proper coactingrelation with the'rider.- From the construction thus far described itwill be apparent that should the'lrider" 29 be moved to the left, Fig-1,or rearwardly the side cam 32 will travelfup the portion 33 of thelifter 34 until such cam passes over 4vas the portion 33, see Figs. 3and 4. The details in these respects may be variously -modied within thetrue scope'of the invention, as Willbe obvious. The rider may-.be

provided with an additional projection-32"- l on the side 'opposite thecam32, which, .inl

connection with the bracket, may act to guide thel end-of the rider asit is-moved longitudinally, but this is not essential.

Referring more particularly gte-th? detail views of the rider 1n Figs. 3toed) inclusive, it will benoted that said riderhas a nose 36 andashoulder 37 -to' be engaged under certain conditionshereinafterdescribed by a part 38 secured to thewefthammer, and whichfor identification herein may be termed the rider hammer. lAt itsopposite end, portion the rider 29, see Figs. 3 to 9 inclusive, isprovided with an under sustaining shoulder or rest 39 and an inclinedportion v40, which, underconditions to be presently described, coactwith a part 41 connected to the transverse shaft 5, and hereinconveniently formed as a Enger projecting from the arm 7 see Figs. 1 and2, although,

,described The rider 'has a stop shoulder 45 on itsunderfportion adaptedengage;36V

these various details of rider construct-ion4 may be modified in manyways within the present invention which is defined in its true scope bythe claims. i,

During normal working condition of the loom 'the parts are disposedrelatively, as indicated in Figs. 2 and 9, with one endpor tion of therider resting on the top of the finger 41'and the nosef of the rider inthe path of movement of the rider hammer 3S. Bearing in mind that theweft hammer and perforce the rider hammer move forward once for everytwo heats of the lay and that such forward movements follow thedetecting pick of the shuttle, should the filling be absent on a'detecting beat or forward movement of the hammers, the actuator 9 willbe moved to the front, turn the transverse shaft 5 and move the finger41 from under the front end of `the rider from the position Fig 2 tothat of Fig. 3, and cause filling replenishment on the beat-up followingthe arrival of the shuttle to the replenishing side of the loom. On thenext movement of the weft hammer and rider hammer, which is thenon-detecting or rearward movement, the finger 41 will-engage the end ofthe rider, which is now in position, Fig. 3, and move the rider to theleft, the cam 32 on the rider moving over the part 83- of the riderlifter, and the parts assuming the position represented by F 4. 0n thenext forward movement of the hammers, which is ytheir detecting movementand follows the detecting pick ofthe shuttle, should no filling havebeen laid in front of the weft fork, the rider hammer 38 will engage theShoulder 37 of the rider and move the rider from the posi tion, Fig. 4to that of Fig. 5, theflnger 41 being simultaneously moved to the frontand the filling replenishing mechanism being positioned for the transferof a carrier to the shuttle as the lay beats up following the arrival ofthe shuttle to the filling replenishing side of the loom. However,should the shuttle lay filling in front of the filling fork on thispick, the rider hammer will engagev the shoulder 37 as before and movethe rider to the front or-to the right, but since the Vfilling fork wastilted as the lay beat up following this pick of the shuttle from thereplenishing side of the loom, the finger 41 will not be moved but willremain as in Fig.

6, consequently the inclined portion 40 of the rider will rise over theend of the linger and the parts .assume position as in Fig. 6. On theneXt or rearward movement of the hammers, which is a nondetectingmovement, the parts will be moved from positions of' either Figs. 5 or 6to that of Fig. 7, because if filling is not laid, as would be the casein a' hopper misthread when the parts move from position indicated byFig. 4 to that ofv Fig. 5, the backward movement of the finger 41 willcause it to contact with the rider at 48 and move the rider to theposition of Fig. 7'; and in case there is no hopper misthread on thisdetecting movement, then the finger 41 will not be -moved to the frontandas the rider hammer moves back, the ineline 40 of the rider willcause it to pass from position o f Fig. 6 to that of Fig. 7. In theposition of parts thus reached after asingle hopper mist-hread andconsequent replenishment of the shuttle, whether filling be present ornot on the detecting movement of parts following such replenishment, thestopr shoulder 45 of the rider will taire posi Y tion back of the toe 46of the lever end 26 and be related thereto-to cause either loom stoppage.on a second hopper misthread or return of the parts to initialposition, as

shown by Fig. 2., Shotldasecond hopper misthread occur, the weft forkwill again,

`not be tilted and the actuator 9 willI move the transverse. shaft 5 andVfinger 41, as before, but as the rider hammer also moves forward itengages the nose 36 of the rider and movesv it from the position shownby Fig. 7 to that of Fig. S, thereby causing the shonlder 45 to lmovethe lever 25 and cause loom stoppage. Should filling be present on thisdetecting movement with the parts as shown by Fig. 7,

as would be the case if a second hopper misthread did not occur,the'finger 4]. will not be moved, and as the rider hammer on itsfrontward movement engages and moves the rider, the incline 40 of therider will slide over the end of the. finger and the parts will-assumethe original position, as indicated in. Figs. 9 and 2, and the loom willcontinue to run. 1

Filling replenishment by first failure, of

lling from any cause places the parts successively from thepositionfshown by Fig. 2 to that of Figs. 3 and 4, the last positionbeing assumed as the hammers and finger movebackward on theirnon-detecting action. If, now,.there is no hopper misthread on the nextdetecting movement, in which case filling would belaid bythe-shuttle,the -parts pass from position of Fig. v4 to'that of Fig. 6and then Fig. 7, the last position being as sumed as the hammers moveback onthe nondetecting movement, whether filling be pres ent or not.Should a real misthread occur, however, the filling will be broken asthe shuttle returns to the-rafplenishing sidev of the loom after`replenishment, so that on the neXt detecting movement of the ham-vmers,A which occurs following-the detectingv "pick of the 'shuttle tothe non-re-plenishing shown by Fig. 7.and the finger 41 will bel side ofthe loo1nthe rider hammer will meet the nose 3 6 of the rider inposition moved by the actuator 9,' as before, with the ,result thatl theshoulder 4:5 will -cause the lever to eiect loom stoppage. Thus in thepresent invention it will be noted that upon the occurrence of a doublehopper misl thread, the loom will stop,` and will also be e stopped bythe occurrence.y of a real misthread; in other words` the loomwill-.stop if on two alternate detecting beats the filling be absent;that is, if it -be absent on one detecting'beat, present on the nextdetecting beat, and absent on the next detecting beat the loom willstop.

f What is claimed is:

1. In a loom of the characterdescribed,v

` the combination of the .lay, a transverse shaft'and means foractuating; it to cause filling replenishment on the occurrence 'offilling absence during a detecting beat, and

means for causing loom stoppage on the occurrence of a double hoppermisthreadI and onthe occurrence of a. real misthread.

f 2. Ina loom ofthe character described, the combinatio fof. the lay andits shuttle boxes, a detector to detect the presence or absence offilling, means for controlling replenishment oflling on the .detectionof filling absence, and means to stop the loom on the occurrence ofeither la double hopper misthread or ,a real' misthread.

3. In a loom of thecharacter described,

the 'combination of the lay and its shuttle boxes, a detectortogdetecfthe presence or absence of filling, means for controllingreplenishment of'lillingon detection of filling absence, and means tocause loom stoppage when filling is absent on two alternate del tectingbeats whether it is-absent or not on the intermediate detecting beat.

4. In a loomof the character described, the lcombination of means fordetectin the presence or absence of lling in the she fillingreplenishing controlling means adapted lto be actuated when filling isabsent on a detecting beat, and means permitting continuation of theloom operation upon the ing replenishing' controlling means adapted foreration on the occurrence of a single hopper to be actuated when fillingis absent-ena detecting beat, and means comprlsing a rider er'nnttlngthe loom to continue 1n opmisthread and for causing loom stoppage on theoccurrence 'of a double hopper misthread or a real misthread.

6. Inv a-loom ofthe .character described, the combination of means-*fordetecting the presence or absencefof filling in theshed, llingreplenishing controlling means adapted toghe" actuated whenfilling v isabsent on a detecting beat, and meansI for stopping the loom when thefilling is absenton a detecting'beat following replenishment, present onthe next detectingbeat,and. absent on the next detecting beat. l

7. In a loom ofthe character described, the combination of'mea'ns fordetectin the presence or absence of filling invtheshe fillingreplenishing controlling means adapted to be actuated 'when filling isabsent on a detectingbeat,I and means for controlling the loom operation`comprising a member and its actuating devices for moving it from normalto a secondary position followingV the first detection of fillingabsence, and. toa third position on the next detecting movement 'whetherfilling be" present or absent to locate the parts for causing loomstoppage, and to a fourth position to stop the loomfif lling is absenton the third detectingAmovement.

8. In a loom of the character described, the combination of means fordetecting the presence or absence of filling in the shed, fillingreplenishing controlling means adapted to be actuated when filling isabsent on a- -detecting beat, 'andmeans for controlling the loomoperation, comprising amember and .itsactuating devices for .causingvsaid member to move from normal to a secondary position o'n thedetecting movement following the occurrence of a single hoppermisthread, and to a third position on Athe next detecting movementwhether filling be present or not, and to initial position `uponpresence of fillingon the succeeding detecting movement.

9. In a loom of the character described, the combination of meansfordetecting the presence or absence of filling, filling replenishingcontrolling means adapted to be actuated upon the detecting of fillingabsence, a rider, a rider hammer and a nger, means for causing the riderhammer and finger to move the rider from normal to a secondary positionon a first absence` of filling, to a third position whether filling bepresent or not on the next detecting movement, and either to a positionfor eiiecting loomstoppage shouldfilling be absent on the succeedingdetectingmovement orback to normal position in case filling is presenton such detecting movement. I

10. In a loomgof. the character described,

the combination of means for detecting the j presence or absence offilling, filling replem" ishing controlling maansad'a ted .to beactuated upon the detaiting .of ing absence, a

4looselymounted rider, a rider hammer'and a linger, means for causingthe rider hammer and linger to move the nder from normal to a secondary'position .on a first absence of lling, to a third position whetherlilling be present or not on the next detecting movement, and either toa osition for effecting loomstoppa e should `ng be absent on thesucceeding ete'cting movement or back to normal vposition in case lingispresent on such detecting movement. f

1,1.A In a loom of the clfracterdescribed, A Y the combination ofmeansfor detecting the` presence or absence of lling in the shed, lill-Iing replenishing controlling means adapted to be actuated whenfillingis absent on a Witnesses:

detectin beat, arider having a cam portion, a rlder lifter having acoperating portion, anda rider hammer and finger for actling upon therider stoppage on 'the occurrence of lling absence 20 on two alternatedetecting beats whether it is absent or not on In testimony whereof,

name to this specification, two subscribing witnesses.

to cause it to effect loom the intermediate beat.

I have signed my in the presence of JoNAs NoRTHRoP.

WM. O. PERKINS,

